Added --home-path [path] argument that redirects calls to getHomePath() to some directory [path].

Changed some existing command line arguments too:
-w and -h are now just --resolution [width] [height].
-h is now synonymous with --help.

DEVNOTES.md

@@ -8,7 +8,7 @@ Development Environment
 
 I personally launch ES in windowed mode with a smaller resolution than my monitor and with debug text enabled.
 
-`emulationstation --windowed --debug -w 1280 -h 720`
+`emulationstation --windowed --debug --resolution 1280 720`
 
 
 Creating a new GuiComponent

README.md

@@ -91,23 +91,22 @@ When you first start EmulationStation, you will be prompted to configure any inp
 As long as ES hasn't frozen, you can always press F4 to close the application.
 
 
-**Keep in mind you'll have to set up your emulator separately from EmulationStation.**
-I am currently also working on a stand-alone tool, [ES-config](https://github.com/Aloshi/ES-config), that should help make configuring emulators easier.
+**Keep in mind you'll have to set up your emulator separately from EmulationStation!**
 
 After you launch a game, EmulationStation will return once your system's command terminates (i.e. your emulator closes).
 
 
-You can use `--help` to view a list of command-line options. Briefly outlined here:
+You can use `--help` or `-h` to view a list of command-line options. Briefly outlined here:
 ```
--w [width]		- specify resolution width.
--h [height]		- specify resolution height.
+--resolution [width] [height]	- try and force a particular resolution
 --gamelist-only		- only display games defined in a gamelist.xml file.
 --ignore-gamelist	- do not parse any gamelist.xml files.
 --draw-framerate	- draw the framerate.
 --no-exit		- do not display 'exit' in the ES menu.
 --debug			- print additional output to the console, primarily about input.
---windowed      - run ES in a window.
+--windowed	- run ES in a window, works best in conjunction with --resolution [w] [h].
 --scrape	- run the interactive command-line metadata scraper.
+--home-path [path]	- use [path] instead of the "home" environment variable (useful for portable installations).
 ```
 
 Writing an es_systems.cfg

src/Settings.h

@@ -25,6 +25,7 @@ public:
 
 	std::shared_ptr<Scraper> getScraper();
 	void setScraper(std::shared_ptr<Scraper> scraper);
+
 private:
 	static Settings* sInstance;
 
@@ -36,7 +37,9 @@ private:
 	std::map<std::string, bool> mBoolMap;
 	std::map<std::string, int> mIntMap;
 	std::map<std::string, float> mFloatMap;
+
 	std::shared_ptr<Scraper> mScraper;
+	std::string mHomePathOverride;
 };
 
 #endif

src/main.cpp

@@ -26,14 +26,17 @@ bool parseArgs(int argc, char* argv[], unsigned int* width, unsigned int* height
 {
 	for(int i = 1; i < argc; i++)
 	{
-		if(strcmp(argv[i], "-w") == 0)
+		if(strcmp(argv[i], "--resolution") == 0)
 		{
+			if(i >= argc - 2)
+			{
+				std::cerr << "Invalid resolution supplied.";
+				return false;
+			}
+
 			*width = atoi(argv[i + 1]);
-			i++; //skip the argument value
-		}else if(strcmp(argv[i], "-h") == 0)
-		{
-			*height = atoi(argv[i + 1]);
-			i++; //skip the argument value
+			*height = atoi(argv[i + 2]);
+			i += 2; // skip the argument value
 		}else if(strcmp(argv[i], "--gamelist-only") == 0)
 		{
 			Settings::getInstance()->setBool("ParseGamelistOnly", true);
@@ -56,20 +59,30 @@ bool parseArgs(int argc, char* argv[], unsigned int* width, unsigned int* height
 		}else if(strcmp(argv[i], "--scrape") == 0)
 		{
 			scrape_cmdline = true;
-		}else if(strcmp(argv[i], "--help") == 0)
+		}else if(strcmp(argv[i], "--home-path") == 0)
+		{
+			if(i >= argc - 1)
+			{
+				std::cerr << "No home path specified!\n";
+				return false;
+			}
+
+			setHomePathOverride(argv[i + 1]);
+		}else if(strcmp(argv[i], "--help") == 0 || strcmp(argv[i], "-h") == 0)
 		{
 			std::cout << "EmulationStation, a graphical front-end for ROM browsing.\n";
+			std::cout << "Written by Alec \"Aloshi\" Lofquist.\n";
 			std::cout << "Command line arguments:\n";
-			std::cout << "-w [width in pixels]		set screen width\n";
-			std::cout << "-h [height in pixels]		set screen height\n";
+			std::cout << "--resolution [width] [height]	try and force a particular resolution\n";
 			std::cout << "--gamelist-only			skip automatic game detection, only read from gamelist.xml\n";
 			std::cout << "--ignore-gamelist		ignore the gamelist (useful for troubleshooting)\n";
 			std::cout << "--draw-framerate		display the framerate\n";
 			std::cout << "--no-exit			don't show the exit option in the menu\n";
 			std::cout << "--debug				even more logging\n";
 			std::cout << "--scrape			scrape using command line interface\n";
-			std::cout << "--windowed			not fullscreen, should be used in conjunction with -w and -h\n";
-			std::cout << "--help				summon a sentient, angry tuba\n\n";
+			std::cout << "--windowed			not fullscreen, should be used in conjunction with --resolution\n";
+			std::cout << "--home-path [path]		use [path] instead of the \"home\" environment variable (for portable installations)\n";
+			std::cout << "--help, -h			summon a sentient, angry tuba\n\n";
 			std::cout << "More information available in README.md.\n";
 			return false; //exit after printing help
 		}

src/platform.cpp

@@ -2,18 +2,30 @@
 #include <stdlib.h>
 #include <boost/filesystem.hpp>
 
+std::string sHomePathOverride;
+
+void setHomePathOverride(const std::string& path)
+{
+	// make it use generic directory separators
+	sHomePathOverride = boost::filesystem::path(path).generic_string();
+}
 
 std::string getHomePath()
 {
+	if(!sHomePathOverride.empty())
+		return sHomePathOverride;
+
 	std::string homePath;
 
-	//this should give you something like "/home/YOUR_USERNAME" on Linux and "C:\Users\YOUR_USERNAME\" on Windows
+	// this should give you something like "/home/YOUR_USERNAME" on Linux and "C:\Users\YOUR_USERNAME\" on Windows
 	const char * envHome = getenv("HOME");
-	if(envHome != nullptr) {
+	if(envHome != nullptr)
+	{
 		homePath = envHome;
 	}
+
 #ifdef WIN32
-	//but does not seem to work for Windwos XP or Vista, so try something else
+	// but does not seem to work for Windwos XP or Vista, so try something else
 	if (homePath.empty()) {
 		const char * envDir = getenv("HOMEDRIVE");
 		const char * envPath = getenv("HOMEPATH");
@@ -26,13 +38,9 @@ std::string getHomePath()
 					homePath[i] = '/';
 		}
 	}
-#else
-	if (homePath.empty()) {
-		homePath = "~";
-	}
 #endif
 
-	//convert path to generic directory seperators
+	// convert path to generic directory seperators
 	boost::filesystem::path genericPath(homePath);
 	return genericPath.generic_string();
 }

src/platform.h

@@ -18,3 +18,4 @@
 #include <string>
 
 std::string getHomePath();
+void setHomePathOverride(const std::string& path);